
jQuery.extend({
	

    createUploadIframe: function(id, uri)
	{
			//create frame
            var frameId = 'jUploadFrame' + id;
            var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
			if(window.ActiveXObject)
			{
                if(typeof uri== 'boolean'){
					iframeHtml += ' src="' + 'javascript:false' + '"';

                }
                else if(typeof uri== 'string'){
					iframeHtml += ' src="' + uri + '"';

                }	
			}
			iframeHtml += ' />';
			jQuery(iframeHtml).appendTo(document.body);

            return jQuery('#' + frameId).get(0);			
    },
    createUploadForm: function(id, fileElementId, data)
	{
		//create form	
		var formId = 'jUploadForm' + id;
		var fileId = 'jUploadFile' + id;
		var form = jQuery('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');	
		if(data)
		{
			for(var i in data)
			{
				jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
			}			
		}		
		var oldElement = jQuery('#' + fileElementId);
		var newElement = jQuery(oldElement).clone();
		jQuery(oldElement).attr('id', fileId);
		jQuery(oldElement).before(newElement);
		jQuery(oldElement).appendTo(form);


		
		//set attributes
		jQuery(form).css('position', 'absolute');
		jQuery(form).css('top', '-1200px');
		jQuery(form).css('left', '-1200px');
		jQuery(form).appendTo('body');		
		return form;
    },

    ajaxFileUpload: function(s) {
        // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout		
        s = jQuery.extend({}, jQuery.ajaxSettings, s);
        var id = new Date().getTime()        
		var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));
		var io = jQuery.createUploadIframe(id, s.secureuri);
		var frameId = 'jUploadFrame' + id;
		var formId = 'jUploadForm' + id;		
        // Watch for a new set of requests
        if ( s.global && ! jQuery.active++ )
		{
			jQuery.event.trigger( "ajaxStart" );
		}            
        var requestDone = false;
        // Create the request object
        var xml = {}   
        if ( s.global )
            jQuery.event.trigger("ajaxSend", [xml, s]);
        // Wait for a response to come back
        var uploadCallback = function(isTimeout)
		{			
			var io = document.getElementById(frameId);
            try 
			{				
				if(io.contentWindow)
				{
					 //xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
					xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerText:null;
					xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
					 
				}else if(io.contentDocument)
				{
					 xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
                	xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
				}						
            }catch(e)
			{
				jQuery.handleError(s, xml, null, e);
			}
            if ( xml || isTimeout == "timeout") 
			{				
                requestDone = true;
                var status;
                try {
                    status = isTimeout != "timeout" ? "success" : "error";
                    // Make sure that the request was successful or notmodified
                    if ( status != "error" )
					{
                        // process the data (runs the xml through httpData regardless of callback)
                        var data = jQuery.uploadHttpData( xml, s.dataType );    
                        // If a local callback was specified, fire it and pass it the data
                        if ( s.success )
                            s.success( data, status );
    
                        // Fire the global callback
                        if( s.global )
                            jQuery.event.trigger( "ajaxSuccess", [xml, s] );
                    } else
                        jQuery.handleError(s, xml, status);
                } catch(e) 
				{
                    status = "error";
                    //jQuery.handleError(s, xml, status, e);
                    console.info(s, xml, status, e);
                }

                // The request was completed
                if( s.global )
                    jQuery.event.trigger( "ajaxComplete", [xml, s] );

                // Handle the global AJAX counter
                if ( s.global && ! --jQuery.active )
                    jQuery.event.trigger( "ajaxStop" );

                // Process result
                if ( s.complete )
                    s.complete(xml, status);

                jQuery(io).unbind()

                setTimeout(function()
									{	try 
										{
											jQuery(io).remove();
											jQuery(form).remove();	
											
										} catch(e) 
										{
											jQuery.handleError(s, xml, null, e);
										}									

									}, 100)

                xml = null

            }
        }
        // Timeout checker
        if ( s.timeout > 0 ) 
		{
            setTimeout(function(){
                // Check to see if the request is still happening
                if( !requestDone ) uploadCallback( "timeout" );
            }, s.timeout);
        }
        try 
		{

			var form = jQuery('#' + formId);
			jQuery(form).attr('action', s.url);
			jQuery(form).attr('method', 'POST');
			jQuery(form).attr('target', frameId);
            if(form.encoding)
			{
				jQuery(form).attr('encoding', 'multipart/form-data');      			
            }
            else
			{	
				jQuery(form).attr('enctype', 'multipart/form-data');			
            }			
            jQuery(form).submit();

        } catch(e) 
		{			
            jQuery.handleError(s, xml, null, e);
        }
		
		jQuery('#' + frameId).load(uploadCallback	);
        return {abort: function () {}};	

    },

    uploadHttpData: function( r, type ) {
        var data = !type;
        data = type == "xml" || data ? r.responseXML : r.responseText;
        // If the type is "script", eval it in global context
        if ( type == "script" )
            jQuery.globalEval( data );
        // Get the JavaScript object, if JSON is used.
        if ( type == "json" )
            eval( "data = " + data );
        // evaluate scripts within html
        if ( type == "html" )
            jQuery("<div>").html(data).evalScripts();

        return data;
    }
})



function ajaxFileUpload(fileInput,imgUrl,hrefUrl,attachementUrl,attachmentId)  
{  
   console.debug(fileInput);
   $.ajaxFileUpload({  
             url:'common/ctrl/file/upload',             //需要链接到服务器地址  
             secureuri:false,  
             fileElementId:fileInput,                         //文件选择框的id属性  
             dataType: 'json',                                     //服务器返回的格式，可以是json  
             success: function (data, status)             //相当于java中try语句块的用法  
             {     
            	var pathUrl = "/"+data.url;
                 //$('#result').html('上传图片成功!请复制图片地址<br/>'+data.url);  
             	if ($('#'+imgUrl)){
            		//$('#'+imgId).attr('src',data.url);
             		$('#'+imgUrl).attr('src',pathUrl);
            	}
             	if ($('#'+hrefUrl)){
            		$('#'+hrefUrl).attr('href',pathUrl);
            	}

             	if ($('#'+attachementUrl)){
            		$('#'+attachementUrl).val(pathUrl);
            	}
             	console.debug(attachmentId,$('#'+attachmentId),data.attachmentId);
            	if ($('#'+attachmentId)){
            		$('#'+attachmentId).val(data.attachmentId);
            	}
             	console.debug(attachmentId,$('#'+attachmentId),data.url);
             },  
             error: function (data, status, e)             //相当于java中catch语句块的用法  
             {  
                 //$('#result').html('上传图片失败');  
             }  
           }  
         );  
}

function clearFileUpload(fileInput,imgUrl,hrefUrl,attachementUrl,attachmentId){

	console.debug("clearFileUpload =====");
	if ($('#'+imgUrl)){
		$('#'+imgUrl).attr('src','http://placehold.it/350x300');
	}
	if ($('#'+hrefUrl)){
		$('#'+hrefUrl).attr('href','#');
		$('#'+hrefUrl).attr('target','');
	}
	if ($('#'+attachementUrl)){
		$('#'+attachementUrl).val("");
	}
	if ($('#'+attachmentId)){
		$('#'+attachmentId).val("");
	}
	if ($('#'+fileInput)){
		$('#'+fileInput).val("");
	}

}



function ajaxFileUploadByData(tableName,dataId,fileInput,imgUrl,attachmentId,callbackFunc)  
{  
   $.ajaxFileUpload({  
             url:'common/ctrl/file/uploadByData',             //需要链接到服务器地址 
             data:{"tableName":tableName,"fieldName":attachmentId,"dataId":dataId},
             secureuri:false,  
             fileElementId:fileInput,                         //文件选择框的id属性 
             dataType: 'json',                                     //服务器返回的格式，可以是json  
             success: function (data, status)             //相当于java中try语句块的用法  
             {  
            	var fun = eval(callbackFunc);
            	
            	if (typeof(data.url) == "undefined"){
            		alert(data.message);
            		return;
            	}
        		if (fun){
        			fun();
        		}

            	//var pathUrl = "/"+data.url;
                 //$('#result').html('上传图片成功!请复制图片地址<br/>'+data.url);  
             	if ($('#'+imgUrl)){
            		$('#'+imgUrl).attr('src',data.url);
             		//$('#'+imgUrl).attr('src',pathUrl);
            	}
            	if ($('#'+attachmentId)){
            		$('#'+attachmentId).val(data.file_id);
            	}
             },  
             error: function (data, status, e)             //相当于java中catch语句块的用法  
             {  
                 //$('#result').html('上传图片失败');  
             }  
           }  
         );  
}



function clearByData(tableName,dataId,fileInput,imgUrl,attachmentId,hrefUrl,callbackFunc)
{  
   console.debug(fileInput);
   $.ajaxFileUpload({  
             url:'common/ctrl/file/clearByData',             //需要链接到服务器地址 
             data:{"tableName":tableName,"fieldName":attachmentId,"dataId":dataId},
             secureuri:false,  
             fileElementId:fileInput,                         //文件选择框的id属性 
             dataType: 'json',                                     //服务器返回的格式，可以是json  
             success: function (data, status)             //相当于java中try语句块的用法  
             {     
            	 	var fun = eval(callbackFunc);
            	   console.debug(data);
            	   console.debug($('#'+imgUrl));
	           		if (fun){
	        			fun();
	        		}
            		if ($('#'+imgUrl)){
            			$('#'+imgUrl).attr('src','http://placehold.it/350x300');
            		}
            		if ($('#'+attachmentId)){
            			$('#'+attachmentId).val("");
            		}
            		if ($('#'+fileInput)){
            			$('#'+fileInput).val("");
            		}
            		if ($('#'+hrefUrl)){
            			$('#'+hrefUrl).attr('href','#');
            			$('#'+hrefUrl).attr('target','');
            		}
            		
             },  
             error: function (data, status, e)             //相当于java中catch语句块的用法  
             {  
                 //$('#result').html('上传图片失败');  
             }  
           }  
         );  
}


var _tableName;
var _dataId;
var _uploadFileInput;
var _imgUrl;
var _attachmentId;
var _callbackFunc;

//由于共用对话框组件，所以打开对话框时，记录相关参数
function selectFile(tableName,dataId,uploadFileInput,imgUrl,attachmentId,callbackFunc){
	_tableName = tableName;
	_dataId = dataId;
	_uploadFileInput = uploadFileInput;
	_imgUrl = imgUrl;
	_attachmentId = attachmentId;
	_callbackFunc = callbackFunc;
}

function uploadFile(){
	ajaxFileUploadByData(_tableName,_dataId,_uploadFileInput,_imgUrl,_attachmentId,_callbackFunc);
	$("#upload-compose-modal").modal('hide');
}

function clearFile(_tableName,_dataId,_uploadFileInput,_imgUrl,_attachmentId,hrefUrl,callbackFunc){
	clearByData(_tableName,_dataId,_uploadFileInput,_imgUrl,_attachmentId,hrefUrl,callbackFunc);
}

function ajaxFileUploadExcelImport(templateName,fileInput)  
{  
	$(document).mask('处理中...');	
	$.ajaxFileUpload({  
             url:'common/ctrl/excelImport/uploadByData',             //需要链接到服务器地址 
             data:{"templateName":templateName},
             secureuri:false,  
             fileElementId:fileInput,                         //文件选择框的id属性 
             dataType: 'json',                                     //服务器返回的格式，可以是json  
             success: function (data, status)             //相当于java中try语句块的用法  
             {     
            	alert("ok");
             },  
             error: function (data, status, e)             //相当于java中catch语句块的用法  
             {  
            	 alert("error");  
             },
     		complete:function(){
    			$(document).unmask();
    		}             
           }  
         );  
}
